I worked for Yamaha in the late 90's, and always loved the decal on the watercraft, over the jet pump that read:"Never place anus or vagina over this opening"
I always meant to order a hundred of them, and put them over every opening I could find, but they are a few buck a piece, and had to be ordered, blah, blah. Always gave me a laugh though

The holiday season in Mexico means an abundance of cheap and POWERFUL firecrackers. My favorite regional variety, known as 'palomas' are just 10-20 sheets of newspaper folded into a pocket which is filled with gunpowder. These are wrapped in a lot more newspaper and are available in a variety of sizes as seen here: